1002
2 + 2 - 100 + 1000 = -1,096
1000 1+ (1-2) + 1000 1 - 1 + 1000 1000
1000 + 2 = 1,002
1 + 2 + 1000 + 300 + 23 + 12 = 1338
1010
Its 500,500. you just work 1000 x 1001 divided by 2
500,500
6000.......it's actually 5,100
4100
1000 + 1000 - 1000 + 1000 = 2000
There are 1000 metres in one kilometre. Therefore, 2 kilometres plus 8 metres is equal to 2 x 1000 + 8 = 2008 metres.
1000+40=1040 1040+1000=2040 2040+30=2070 2070+1000=3070 3070+20=3090 3090+1000=4000 4000+10=4100